BAINBRIDGE MASS SPECTROGRAPH PDF

Study about Bainbridge Mass Spectrograph, In the Bainbridge mass spectrograph, the positive rays are produced in a specially designed discharge tube ♢. In Bainbridge mass spectrograph, field particles of same velocity are selected by using a velocity selector and then they are subjected to a uniform magnetic field. Bainbridge Mass Spectrometer || Nuclear Physics || 12th Std Physics undefined. Bainbridge Mass Spectrograph | Determination of Isotopic masses (Lecture No.

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Ionization chamber is used to ionize the gas whose mass or isotope is to be determined and positive ions are produced. The radius of the path in the deflection chamber is directly proportional to the mass of the ion.

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Velocity selector has two fields electric and magnetic field hainbridge are applied perpendicular to the moving ion beam. They then travel between two plates A and B, between which a potential V is applied. This method of analysis is very accurate and can detect differences in the masses of two ions as masss as one part in 10 9. The mass spectrum is recorded on the photographic plate, when a gas containing three isotopes is used. If M 1 and M 2 are the masses of two isotopes and if x 1 and x 2 are the distances from Nainbridge 3.

This method of analysis is very accurate and can detect differences in the masses of two ions as small as one part in 10 9. A magnetic field strength B is applied at right angles to the electrostatic field and so the electrostatic and electromagnetic forces act in opposite directions to each other.

A magnetic field strength B is applied at right angles to the electrostatic field and so the electrostatic and electromagnetic forces act in opposite directions to each other.

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Figure 2 shows the appearance of the photographic plate when a gas containing two isotopes is used. If the mass of an ion is M, its charge q and its velocity v then. A potential V is applied between two electrodes to produce the electric field.

Bainbridge Mass Spectrograph A velocity selector was used to produce a monovelocity ion beam and a transverse magnetic field was employed to discriminate between ions of different masses.

A velocity selector was used to produce a monovelocity ion beam and a transverse magnetic field was employed to discriminate between ions of different masses. Engineering Physics by Dr.

The detection is by either a photographic plate or a collector that produces a small current when the ions fall on it. Ions are formed at D and pass through the cathode C and then through a slit S 1. Amita Maurya, Peoples University, Bhopal. His apparatus gave accuracies of one part in The ion moves in straight line path for which both the forces acting on it are equal.

Linear separation This method of analysis is very accurate and can detect differences in the masses of two ions as small as one part in 10 9. MST-I Nov The linear separation using equation 3. The masss of the path in the deflection chamber is directly proportional to the mass of the ion.

Mass spectrometer

The ion moves in straight line path for which both the forces acting on it are equal The velocity of ion which passes undeflected through the velocity selector is Uniform magnetic field acting normal to the path of ions having same velocity deflects the ions of different masses from a straight path to circular path of different radii.

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The beam is then passed through velocity selector in which electric and magnetic fields are applied perpendicular to each other. Note the wider bainbrodge for the mass m 1showing its relatively greater abundance. Mass spectrometer In Aston developed the first really good mass spectrograph, an instrument for measuring the masses of isotopes.

If the mass of an ion is M, its charge q and its velocity v then or The radius of the path in the deflection chamber is directly proportional to the mase of the ion.

Working Ions are formed in ionization chamber and pass through the cathode, then through collimating slits S 1 and S 2. The detection is done by photographic plate when the ions fall on baingridge. The magnetic field may be varied, so changing the radii of the particles’ paths so that ions of different masses fall on a fixed collector. A simpler form of the mass spectrograph than Aston’s is that due to Bainbridge and a kass view of this is shown in Figure 1. Ions are formed in ionization chamber and pass through the cathode, then through collimating slits S 1 spdctrograph S 2.

Principle Uniform magnetic field acting normal to the path of ions having same velocity deflects the ions of different masses from a straight path to circular path of different radii, Construction i Ionization Chamber Ionization chamber is used to ionize the gas whose mass or isotope is to be determined and positive ions are produced.

Note the wider line for the mass m 1showing its relatively greater abundance.